Why does a tall tree hit the ground first when both trees tip over?

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preluderacer
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Homework Statement



A tall tree and a short tree (both having the same width and mass density) are cut at the base at the same time, and begin tipping over. Which tree hits the ground first?



The Attempt at a Solution



I think they hit at the same time because gravity pulls on both of them equally?
 
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No at all. You will have to consider their moment of inertia. Have you started on the topic already?

In fact you can try this now, put a long and short ruler against the wall, let them drop. You will realize that they do not hit the floor at the same time.